Methods of 3D map storage based on geo-referenced image database
(1. School of Surveying and Spatial Information Systems, University of New South Wales, NSW 2032, Australia;
2. School of Surveying and Mapping, Henan Polytechnic University, Jiaozuo 454000, China)
2. School of Surveying and Mapping, Henan Polytechnic University, Jiaozuo 454000, China)
Abstract: In order to store and manage a large amount of ground and indoor image data with high resolution, an integrated data management system needs to be developed. Possible strategies for this purpose were discussed together with initial test on the newly defined 3D maps. The features of such 3D maps, data organization, key techniques used for the map storage, such as image compression based on wavelet transformation, quadtree index, update and retrieval, were analyzed, with the goals of bringing some profits to the storage and management of the digital data in the visual construction of digital mine, digital city and digital community.
Key words: 3D map; geo-referenced image; image database; storage technology